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CVE-2017-15873

20
FAUCET Score

CVE-2017-15873 describes an Integer Overflow vulnerability in the get_next_block function of BusyBox 1.27.2's bunzip2 decompressor, potentially leading to a write access violation. This medium-severity vulnerability (CVSS 5.5) requires user interaction (UI:R) and local access (AV:L) to trigger, with a high impact on availability (A:H) but no impact on confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
1.27.2CPE matchmatch criteria
cpe:2.3:a:busybox:busybox:1.27.2:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 78th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: busybox
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: busybox
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: busybox

Vendor Advisories (1)

redhatCVE-2017-15873Low

busybox: Integer overflow in the get_next_block function

Oct 22, 2017

References

bugs.busybox.net / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
git.busybox.net / busybox/commit
Issue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/07/msg00037.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/02/msg00020.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3935-1
Third Party Advisory